Find the rule: 45, 55, 66, 78, -, -, 120, 136

78+13=91 91+14=105 105+15=120

RELATED INFORMATIONS

1. Divide 30, 42, 55, 66, 78 and 91 into two groups to make the product of each group equal
2. Find out the law of 1,3,6,10,15,21,28,36 and the law of 0,1,3,6,10,15,21
3. One plus one third plus one sixth plus one tenth plus one fifteenth plus one twenty-one plus one twenty-eight plus one thirty-six What's one in forty-seven?
4. 1 / 3 + 1 / 6 + 1 / 10 + 1 / 15 + 1 / 21 + 1 / 28 + 1 / 36 + 1 / 45 are calculated by simple method
5. One third plus one sixth plus one tenth plus one fifteenth plus one twenty-one plus one twenty-eight plus one thirty-six plus one forty-five One fifty-five and one sixty-six is equal to?
6. 49 times 9 / 50 (/ is a fractional line) must be a process
7. A math problem. Simplify first, then calculate [(2x+y)²-y(y+4x)-8x]/2x x=10
8. A simple mathematical problem of simplification (2 + 3) / (3 + 3) can be changed into (1 + 2 / 3) / (1 + 3 / 3). How is this changed
9. Molecules are: (1 and 2 / 3) + (2 and 3 / 4) + (3 and 4 / 5) + +(1997 of 1996 and 1998) + (1998 of 1997 and 1999) The denominator is: 5 + (8 and 1 / 4) + (11 and 2 / 5) + +(5990 1995 / 1998) + (5993 1996 / 1999)
10. 3 to the power of 2010 + 5 * (negative 3) to the power of 2009 + 6 * 3 to the power of 2008 - 2010 * 9 (negative 1) to the power of 2007
11. Calculation: 13 + 16 + 110 + 115 + 121 + 128 + 136 + 145=______ ．
12. It's a very difficult calculation problem, simple calculation (123456 + 234561 + 345612 + 456123 + 561234 + 612345) what is 7,
13. 1. Square of 2004 - square of 2003, (3 2 / 9 + 9 2 / 3) * (except) (1 / 9 + 1 / 3) 3. 2.4 * (multiply) 20 and 3 / 5 + 33.1 * (multiply) 7.64, (2890 + 5 / 6 + 7 / 8 + 7 / 10) * (except) (5 / 6 + 7 / 8 + 7 / 10) eldest brother! Can you write out the idea and process?
14. Sixth grade math problems (may be easy for you) 1. Xiao Ming's classroom is on the third floor. He has to walk 22 steps on each floor. How many steps does he have to walk from the first floor to the third floor? 2. Li Dong graduated from university in August, and three companies are willing to accept him in the talent market. The salary after employment is as follows: Company A: annual salary system, 30000 yuan in the first year, and 2000 yuan in salary increase compared with the previous year after one year Company B: half year salary system, 15000 yuan in the first half year, 1000 yuan higher than the first half year Company C: monthly salary system, 2000 yuan per month, a year later, a monthly salary increase of 100 yuan Which company does Li Dong work in? Expression
15. Two cars start from place a at the same time and drive along a highway to place B. car a travels 8 kilometers more per hour than car B. car a arrives at place C 40 minutes earlier than car B. when car B arrives at place C, car a just arrives at place B. It is known that the distance from place C to place B is 40 kilometers How many kilometers per hour does car B travel?
16. There are ten steps in front of the gate of Huangqiao Grand Theater. Each step is 6 meters long, 0.8 meters wide and 0.2 meters high. 1 how many square meters does the ten steps cover? If the steps are paved with floor tiles, at least how many square meters should they be paved? It's better to write down what you think and what you calculate in each step! If it's good, extra points!
17. For a job, Party A can finish it in 9 days and Party B can finish it in 6 days. Now Party A has done it for 3 days, and Party B will continue to finish the rest of the work. How many days does Party B need to finish all the work?
18. 35% more than 20%, 22T less than 25t
19. Xiao Ming made a glass of juice, first drank 1 / 2 of it, then filled it with milk, then drank 1 / 3 of it, then filled it with milk, and finally drank it all. So Xiao Ming drank more juice or milk?
20. There is a pool in which there is a certain amount of water. The pool is equipped with a water inlet pipe and several identical drainage pipes. If the water inlet pipe and five drainage pipes are opened for 8 minutes at the same time, all the water in the pool can be discharged. If the water inlet pipe and eight drainage pipes are opened for 4 minutes at the same time, all the water in the pool can be discharged, Turn off six of the drain pipes. In a minute, the pool will be empty. How many drain pipes are installed on the pool? (please analyze the answer, otherwise do not choose the best answer!)